Lubricating system for internal-combustion engines



Nov., 139 1928. 1,691,322

A. E. WINCKLER LUBRICATING SYSTEM FOR INTERNALCOMBUSTION ENGINES Filed March 2e, 1925 6 sheets-sheet 1 E i dl g oo OH? gli. P/757 C /QG @7a WMU Zai @l Nov. 13, 1928.l LGQLSZZ A. E. wlNcKLER LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Nov. 13, 1928.

A. E. WINCKLER LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed March 26, 1925 6 Sheets-Sheet 3 Nov. 13, 192s. 1,691,322

y A. E. wlNcKLER LUBRIGATING SYSTEM FOR INTERNALCOMBUSTION ENGINES A. E. WINCKLER LUBRIGATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Nov, 13, 1928.

6 1 Sheets-Sheet 5 Filed March 26, 1925 Nov. 13, 192s. 1,691,322

A. E. WINCKLER LUBRICATING SYSTEM FOR INTERNAL GoMBUsTloN ENGINES Filed March 26, 1925 6 Sheets-Sheet 6 Patented Nov. 13, 1928.

PATENT OFFICE.

A AGE E. WINCKLER, F MILWAUKEE, WISCONSIN.

LUBBICATING SYSTEM FOB INTERNAL-COMBUSTION ENGINES.

Application led March. 26, 1925. Serial No. 18,383.

The invention relates to internal combustion engines of the injection type. In the operation of internal combustion engineslpartigcplarly of the sleeve-valve` type, it is important that the englne and feed mech'- anism should be properly lubricated. One obj ect of the invention is to provide improved means whereby the pumping of .fuel to the engine will be automatically stopped when the pressure in the lubricating system of the engine and the feed mechanlsm becomes deficient. Another object of the invention 1s to provide improved means for lubricating the Workin parts of the fuel feeding mechanism for t e engine. Gther objects will appear from the description.

The invention consists in the several novel features hereinafter set forth and more particularly defined by the claims at the conclusion hereof.

In the drawings: Fig. 1 isa transverse section of an engine embodying the'invention, the fuel feed mechanism eing shown in elevation. Fig. 2 is a vertical section through the fuel feed mechanism. Fig. 3 is a vertical longitudinal section of the mechanism for operating the meterin valves. Fig. 4 is a longitudinal section o the fuel feed mechanism taken through one of the pumps and metering valves. Fig. 5 is a horizontal section taken on line 5--5 of Fig. 3. Fig. 6 is a side elevation of parts of the con trolling mechanism actuated by the lubricating oil. Fig. 7 is an invertedplan of said parts. Fig. 8 is a lan view of the fuel feed mechanism, parts eing omitted. Fig. 9 is a detail view of the cam structure for operating the metering valves. Fig. 10 is a section taken on line 10-.10 of Fig. 4. Fig. 11 is a detail section of one of the pitmen for convnecting the pump plunger to which it-is attached to the'wobble ring.

.The invention is illustrated in connection with an engine B of the six cylinder type with cylinders verticali and longitudinally aligned, but one of whic is shown. The engine casing comprises a crank-case 7J. Each cylinder comprises an inner wall b* and an outer wall b, which form a water-jacket b around the cylinders. `An air inlet. port 67 and an exhaust port bs are provided for .each cylinder. A crank-shaft bu is sultably )ournalle'd in the crank casing and provided with cranks b1? which are respectively connected by pitmen b1* to the working pistons b13 in the cylinders. The engine is of the fuelinjection type and the upper end of each cylinder is provided with a head C which is secured to the c linder casting by bolts c. The enginev is aso of the four-cycle sleevevalve type and each cylinder is provided with an outer cylindrical sleeve whichis operatively connected to an eccentric 26 on a valve-operating shaft 27 which is driven from the crank-shaft b in the ratio of 2 to l. The eccentric 26 is' provided with an arm 28 which is pivoted at 29 to a lug on the lower end of sleeve 25 and is adapted to reci rocate the sleeve-valve in the cylinder bt. ach valve 25 is provided with a port 3() which is adapted to register with the air intake port 67 and with a port 31 which is adapted to register with the exhaust port bs in the cyl- 1n er b4. Each cylinder is also provided with an inner cylindrical sleeve valve 32 which is slidable in the sleeve valve 25 and is reciprocated by an eccentric 33 on the shaft 27 and an arm 34 which is fixed to said eccentric and is pivoted at 35 to a lug on the lower end of said sleeve valve 32. Each innersleeve-valve is provided with an air port 36 which, when in registry with ports 30 and b", will admit air into the cylinder every fourth cycle. Each sleeve 32 is also provided with a port 37 which, during every fourth cycle of the piston, is adapted to register with the `eX- haust port 31 in the outer sleeve valve and an exhaust port bs. Each cylinder headV c comprises a cylindrical wall 0'.' extending longitudinallyof and into the working cylinder b* and the sleeve valves 25- and 32 slide between said Wall and said cylinder. Each cylinder head comprises an inwardly extending Wall 05 which is inclined inwardly and upwardly `and formed with an opening c. A combustion-chamber 07 is formed in the opening c and the wall around the chamber v is extended upwardl to form a cylindrical portion c. The piston b has a tip c adapted to enter the combustion-chamber. The top closure for the water jacket b", which 1s common to all of the cylinders, is formed by a head E which is fitted to the top of the cylinder casting to vform a waterspace e around the cylinder-head and the combustion-chamber. The combustionvture to the engine.

chamber and cylinder head illustrated are more fully set forth in an applicationled by me of even date herewith (Case B), Serial No. 18,381, to which reference may be had for a more detailed description.

An injector D is removably mounted in the cylindrical extension 013 of each cylinder head C. This injector comprises a valve d2 which is adapted to be opened by the pressure of the fuel in the valve casing, acting against a diaphragm @Z9 as more fully set forth in an application (Case A) filed by me March 26, 1925, Serial No. 18,381, to which reference may be had for a detailed description thereof. Fuel under pressure is delivered to each'of the injectors from the feeding Vmechanism through pipes d2 which are connected to the injectors D.

The mechanism for feeding fuel under pressure to the cylinders of the engine constitutes a unit which is enclosed in a casing adapted to contain lubricant, so as vto keep all of the workingv parts well lubricated and which may be connected as a unitary struc- This mechanism comprises a series of pumps and a series of metering valves, both, annularly arranged around the axis of coaxial drive shafts, the

- pumps and metering valves operating longitudinally of the shaft or vertically, the several mechanisms being arranged in vertical series. The casing for enclosing the fuel feeding mechanism and the gearing for driving it comprises a horizontally extending hollow base-member g which is bolted at g2 to the crank-case of the engine and is provided with an upwardly extending integral cylindrical member g3; a hemispherical section g*, which is bolted to the top of member g3 and in which the rotatable crank or.' wobble ring for operating the pumps i's disposed; a cylindrical section g5, in which the pitmen for operating the fuel pumps are contained, and which is bolted to the section g4; a section g' in the lower portion of which the fuel pumps are disposed and which is bolted to the top of section g5; and a cover gl, which is removably secured on the top section g to provide access to the mechanism for operating the metering valves which are disposed in the upper portion of section ge.

A shaft H, centrally and vertically disposed in the casing members g'3 and g", is ada ted to drive the fuel pumps. This sha t is journalled in a ball-bearing It* which is suitably mounted in the lower portion of the casing section g4 and in a ball-bearing which is suitably mounted in the bottom wall gs of the casing section g5.

The vdrive shaft H is connected to be driven by suitable gearing from'the crankshaft of the engine. Said gearing comprises a shaft H which is coaxial with and is disposed beneath the shaft H and is journalled in ball bearings 85 which are mounted inthe casing member g3; a horizontal shaft H2 which is geared to the lower end of shaft H; and suitable gearing between shaft H2 and the cam shaft 27 of the engine, such, for example, as that described and illustrated in an` application filed by me May 28, 1925,

Serial No. 32,550. This gearing drives thel shaft H in synchronism with the engine.

The driving connection between shafts H and H comprises a helically grooved portion k1" on shaft H and a correspondingly grooved or ribbed sleeve it interiitting with portion hw. The upper end of sleeve h is slidably feathered to the lower end of shaft H. By adjusting the sleeve it axially, the relation between shafts H and H will be varied to correspondingly vary the timing of the'fuel feeding mechanism as an entity with respect to the crank movements of the engine. Mechanism for controlling and shifting the sleeve il. to vary the timing of the shaft H relatively to the shaft H comprises arock-shaft 90 which is mounted in the casing section g3 and is suitably connected to any conveniently accessible point for manipulation by the operator; and a forked arm 93, which is iXedly clamped to the shaft 90 and-is suitably connected to raise and lower a collar 97 which extends loosel around the helically ribbed sleeve h. Bafl bearings 98 and 99 are interposed between the non-rotatable collar 97 and the rotating sleeve it" and are suitably held on said sleeve. By shifting arm 93, the driving sleeve la. will be shifted longitudinally of the shafts H and H and the helical interfitting connection between the sleeve and shaft H will rotate thek shaft H relatively to shaft H and correspondingly advance or retard the shaft H and the fuel feeding mechanism operated thereby relatively to the crank movements of the engine.

Fuel pumps I, one'for each working cylinder of the engine are annularly arranged around the drive-shaft H. Each pump (Fig. 4) comprises a piston or plunger I fitting 4in a cylinder I2 which is formed in the casing section g". Each plunger operates through packings z' in a cylindrical recess 2. A ring 3 is interposed between these packing rings. A sleeve i5 which extends around plunger I and fits in a cylindrical seat which is formed in the wall around the pump and is arranged concentrically with cylinder I, is forced upwardly to spread the packingv rings and keep them pressed against the pump plunger. A sprlng 7 is interposed between a shoulder on sleeve 5 and an adjustable retaining ring is, which is screw-threaded to the casing member g6 to force the sleeve 5 upwardly to spread the packing rings. Sleeve i is 'accurately confined against transverse displacement, so that the pump piston I will be truly and freely guided therein. A washer is disposed above the packing ring i and is perfoi-ated so that any fuelwhich may be forced areundthe plunger I will pass to the core Vof thel upper' packing ring i so as to assist in spreading the packing ring to keep it tight.

The mechanism for successively'operating the fuel pumps comprises a hub L which is v keyed vto the shaft H and has its axis inclined relatively to the axis of said shaft to wobble v end of casing section lg and are disposed in side of the casing-seetlon g4. The hub L during its rotation; causes the gear L2 to wobble and the rolling tooth connection between gear L2 and teeth Z3 retains the rin against rotation, so that the pump-operat1ng studs Z4, which are fixed in the ring, will be reciprocate'd in rotative succession. Each stud Z4 extends through gear L2 and ring L and is secured therein by nuts Z5. At its upper end, each stud is provided with a ball Z" which is adapted'to operate a pitman Z7 which is-connected to the lower end of one of the pump plungers I. Each pitman is provided with a ball-socket at either end for connection to the balls on the pistons and plungers respectively. Each pitman comprises an inner bearing member Z8, which is provided at each end with a'n outwardly facing semi-spherical .socket Z9, in which the balls Z and Z1 are respectively seated and a coacting retaining ringZl1 for holding each of said balls iniits socket in the pitman. An ad'usting sleeve Z1? is threaded to the casing'o each pitman `to hold the bearing-members together and to retain 'the ball therein. Laminated washers Z14 are interposed .between bearing members Z8 and members Z11 respectively to facilitate and aid in quick and accurate adjustment of the bearings. The outer ends of the pitmen are enlarged to enclose the bearing members for each ball.

In operation, the wobbling movement im- -parted to ring L', while the shaft H is rotating, will operate the studs Z* to reciprocate the pitmen Z7 in rotative and equally timed succession to reciprocate the pump pistons I. The ball-and-socket joints between the pitmen and thepistons and the studs Z* permit universal movement of the pitmen which is necessary for the free operation of the pump pistons by the studs von the wobble ring.

An annular lubricating oil chamber M is formed in the casing section g", to which oil under, pressure is supplied by a pipe m/from the customary engine-operated oil pump M2 in the crank casing and which may be of any suitable construction as well understood in the art. Sleeves 5 extend vertically through the chamber M and are providedv with radial ducts m to deliver oil from chamber M to the pump pistons I. Annuler grooves m2 are formed in the peripheries of said pistons to feed oil longitudinally thereof to their bearings in sleeves 5. Longitudinal ducts m3 in sleeves deliver lubricating oil under pressure to the lower of each pair of packing rings i to aid in keeping them expanded. A port m5 extends longitudinally through each pump piston I and has its upper end closed by a screw or other suitable closure me. A cross-duct m7 delivers oil from port m to the port m5. The oil entering port m5 is forced downwardly out of the lower end of ball Z10 on the pump piston to deliver oil to the ball-bearing, of which the ball forms a part. A duct m8 extends longitudinally through bearing member Za in `each pitman Z7 to conduct oil from the upper ball-bearing to the `lower bearing around ball Z". This construction exemplifies one in which provision is made for efficiently lubricating the Cil pump pistons and the mechanism for operating them.

A metering device K is associated with.

each fuel lpump to control the volume and time of injection of the fuel chargesy into the g combustion chamber. i Each pump is provided with a discharge duct 23 which leads to a check-valve 106 in a plug d, to which is connected to a pipe Z22 which is inclined downwardly and connected to one of the in-y yjectors which, deliver the fuel into the combustion chambers. Each metering device controls thevolume of the injected charge by the period during whichit remains closed to render its associated fuel pump operating during its compression stroke to force fuel through the lpipe (Z22to one of the injectors. Each metering device comprisesa valve k2 adapted to lit and close a .seat c which is formed in the upper end of' its associated pump cylinder; a stem k3 for said valve; a sleeve and head lo* in which the stem is slidably mounted; a ring 107 held in a cross-wall of the casing section g and in which the head 7:* is removably secured by screws 7691; a head k7 on the lower end of the valve stem; and a metallic bellows 7cm, which has its ends respectively attached to head la7 and ring 107. Head 7c? clamped against a shoulder on the valve stem c:l by a nut 727. `A spring k is interposed between heads c and In? to close the valve during the injection period. A sheath 111, the purposeof which is to limit the expansion of spring 7c when the metering valve unit is removed so that undue, expansion of the metallic bellows IL10 is prevented, extends around the metallic bellows is secured to the lower end of ring 107, extends to the lower end of the fuel supply chamber 103 and predetermined volume of fuel back to the supply reservoir. The injection of fuel occurs on the compression stroke of plunger I and while the metering valve k2 is momentarily closed and any excess fuel from the pumps is forced back into the chamber 103 while the valve is open, while on the other hand fuel is admitted to the pump cylinders through this valve during the suction stroke of the plunger I.

The mechanism for operating the metering valves in rotative succession to control the volume of the fuel injections into the combustion chambers respectively comprises a three part cam, one part of which is rotatably adjustable relatively to the other two, to vary the duration of the closed periods of the valve and consequently the volume of fuel delivered to the injectors by the fuel pumps during each pressure stroke of the pump pistons. This mechanism is driven from a shaft H, which is coaxial with and driven by the shaft H, so that accurate synchronism is attained between the pumps and the metering devices.

Normally, the cam mechanism is designed to,

keep open the metering valve k2, so that the pumps will be inoperative to deliver fuel through pipes 22 to the injectors until the adjustable member of the cam has beenv shifted to cause the closing of the metering valves for suiiicient periods to cause the pumps to force liquid-fuel in substantially solid compression to the injectors.

This cam structure comprises a lower member o', an upper member o2 and a central member o, which is rotatably adjustable relatively to members o', o2. Each of these cams is provided with a concentric circular portion 0fs (Fig. 9) and adepression 04, which, when they are longitudinally in registration, are congruent and will provide the maximum closure of the metering valves and cause the maximum volume to be delivered to the'in-` jectors. In its normal position, the central member o will be positioned to render the periphery of the cam structure circular, so that the metering valves will not be closed until the cani member o is rotatably adjusted. As said member 0 is rotatably adjusted relatively to members 0 and 02, the period during which the metering valves will remain closed will be lengthened. Cam member 0 is formed with a longitudinally extending hub or sleeve om which extends downwardly and is journalled in a bushing @"2 which is confined in a hub o integrally formed with the casing section `gf. Sleeve -om is internally ribbed and grooved correspondingly to the shaft H* to form va feathered 'connection which permits said shaftto slide longitudinally in said sleeve which the sh'aft is rotating. Cam member o2 is provided with an upwardly projecting hub o, which has its u per end journalled in a bushing o1s in a hea 01 which is removably secured by bolts o11 to the 'ing and a grooved collar 125.

hub 012 of a supporting spider which is composed of arms 013 and an outer ring 01? fitting in the upper portion of said casing section g". Hub o3 of cam-member 02 is ribbed and grooved to interfit with the upper end p0rtion 02 of the shaft H. Cam members o and 02 are secured together by bolts 019, which extend through arcuate slots in the' cam member o, to permit the latter to be rotatively adjusted relatively to members o and 02.

Shaft H4I is driven from shaft H by a sleeve 7" which is pinned at r to the lower end of shaft H4 and has a sliding rib and groove connection with the upper end of shaft HL The cammembers are held against axial movement or longitudinally thrust by ballbearings 115 and 11G. Shaft H4 is provided with a helically grooved and ribbed portion it" which interfits with corresponding ribs and grooves in the hub 0B of cam o which is confined against longitudinal movement between the cam members o and 02. Axial movement of the shaft H4 relatively to the cam members will effect a rotative adjustment of cam member o relatively to members o, 0', thus shortening or lengthening the effective length of the depressions 04 in the cam structure to correspondingly vary the duration of the period in which the metering valves will be closed.

The mechanism for shifting shaft H4 longitudinally to adjust cam 0 relatively to cam members o', 02, comprises a forked arm rs which straddles one of the fuel pumps and is fixed to a rock shaft r9. Links r1 are pivoted to arm rs and to a collar 7', which encircles the sleeve 1 and is adapted to shift the sleeve longitudinally on shaft H While the said shaft is in rotation. An upper thrustbearing 7112 and a lower thrust-bearing '/'13 are interposed between the sleeve 1* and collar 1' and are suitably mounted on the sleeve. A sleeve 1'16 is slidable on sleeve 1 to hold the bearing members in operative relation and a nut fr is threadedto said sleeve to lock the sleeve r1 in its desired position. Rock shaft 99 extends across a chamber T18 which is formed in the casing section g. The outer end of this chamber is enclosed by a removable head rw to provide access to the shifting mechanism for the sha'ft.H4 when desired. Shaft r9 is extended to the outside of the cas- (Fivs. 5 and 6) is slidably feathered to said s aft. The inner face of this collar is provided with teeth 126 which are adapted to engage teeth 127 on the hub 128, which is loosely mounted on said shaft and is integrally formed with an arm 129. The latter is connected by a rod 130 which is suitably connected to any convenient point within the reach of the operator. lVhen collar 125 is coupled to the arm 129, the operation of rod 135 will cause shaft r9 to be rocked to raise or lower the shaft H* portion ol the casing-section gt. Each comprises a vertically swinging lever p which is pivoted on a pin p3 which is supported in lugs p4. The latter are formed on the head 104 of the metering unit with which the lever p is associated. Lever p'comprises a horizontally extending arm p which encircles the stem of the metering valve and is adapted to engage a head or abutment p2 on the upper end of the metering valve stem k3. A spring p5 which is disposed between lever arm p and the head lo* of the metering unit, presses said arm upwardly to hold it in engagement with the abutment p2. Lever p also-cour prises an upwardly extending arm p which carries an adjustable abutment-screw p69. Each lever p is Aoperated by a horizontally swinging arm p7, which is pivoted on a pin p8 adjacent the outer margin of casing-section g and carries, at its distal end, a roller p9, which is pulled into contact with the members of the cam structure by a'spring pm which has its inner end hooked to a lug p1. The arm p7 is provided with an abutment p13 which is adapted to engage the abutmentscrew p60 to rock the lever p vertically to open the metering valve. Said spring serves to hold the arm p7 so that its roller p9 will remain in engagement with the cam structures o', o2.

In operation, the rotation of said cam structure will operate the metering valves in rotative succession, according to the operative length of the depressions 0*, resulting from the adjustment of cam-member 0 relatively to the members o', o2. The depression will permit the arms p7 to be operated inwardly in rotative succession by springs p and k6. The leversp will thereupon swing inwardly7 and downwardly and release the metering valve stems, so that the metering valves will be closed by their springs la, While the rollers p are riding on the circular portion of the cam structure, lever arms p will hold the metering valve stemsraised, so that the valves will remain open .to prevent the pumping of the luel to the injectors, and to allow the fuel to flow into the pump cylindersduring the suction stroke of the pump. The force of springs k determines the pressure at which the fuel will be pumped to the injector.

The casing sections, containing the metering valve operating mechanism, are adapted to contain lubricant to keep) all of the operating parts thoroughly lu ricated. Lubricating oil is conducted from chamber M by ducts m10, m2", and the grooves in the bushing 062, (Fig. 3) into the chamber containing the mechanism for operating the metering -into the metallic bellows.

valves. Duets 109 in the meterin valve heads r:4 deliver oil from said cham er into the metallic bellows 701 to lubricate the stem 133. Annular oil distributing grooves 113 are formed in the periphery of the valve-stems [03. The pins p14, on which rollers p9 are journalled, are each provided with a vertical opening p15 extending therethrough and a cross-port p1 to lubricate the bearing for the roller. The duct m20 delivers oil from duct m10 to a channel m21 to lubricate the bearing between eamsleeve 06 and the bushing Iom. A duct 200, in the upper end of which a tube 201 is secured, is adapted to drain the oil above the level of the tube from the chamber in the upper portion of casing section g into the chambers in the lower portions of the casing to lubricate all other parts in the cas-` ing.

The invention contemplates rendering the engine inoperative when the pressure ot lubricating oil, pumped by the engine, is less than a predetermined degree, to insure proper lubrication of the engine and fuel feeding mechanism. For this purpose, an automatic pressure control device is provided which is controlled by the pressure of oil in the lubrieating system, by which collar 125 will be uncoupled from arm' 129, so that it will be impossible for the operator to shift the shaft- H* to adjust cam-member 0 into position to cause the metering valves to be closed. Arm 136 (Figs. 5 and 6) has its outer end conlined in a groove in collar 125 which is slidably feathered to shaft r9. A torsional spring`139 is applied 'to normally press arm 136 into Y position to disconnect collar 125 from arm 129. Arm 136 is fixed to a rockshaft 137, which is journalled in lugs 138 and an arm 14() carrying an abutment-screw 141 is fixed to shaft 137.

The ressure control device s, which is controlled y the pressure of the lubricating oil, comprises a casing s (Fig. 3) which is secured to the casing-section g" by bolts s2; a stem s3 which is adapted to engage the adj ustable abutment 141 on the arm 140, which is fixed to shaft 137; a metallic bellows 8,

which is secured to a shell 87 and to a head 88 in the casing 8'; and a duct s", b which oil under pressure will pass from uct m10 Shell s7 is secured to the upper end of stem sa, so that when the -oil pumped through annular chamber M. in the feed mechanism casing and into the metallic bellows is of suiicient pressure it will force the stem s3 downwardly against abutment 141, thereby turning arm 140, shaft 137 and arm 136 and couplingl the collar 125 to the arm 129. A spring 813 is interposed between the shell S7 and the casing to contract the metallic bellows when the pressure of the oil therein falls below a predetermined point. The casing s comprises a head s which is removably secured in place so as to provide -adapted to contain lubricant, fuel -of the engine is sufficient to overcome the force of the spring S13, it will operate the stem a3 to rock arm 140, shaftI 137 and arm 136 to shift collar125 into coupled relation with the arm 129, so that the operator can then adjust the cam-member o, to cause the metering valves to be opened in rotative suecession and in synchronisni with the motor.

If at any time the pressure in the lubricating' system should fail, the spring .813 will lift stem s3 the torsional spring 139 will turn shaft 137 and arm 136, thereby uncoupling the collar 125 from arm 129, so that the cammember '0 will be free to return to its normal v position and rendered non-adjustable by the operator.

The invention exemplifies improved fuel feed mechanism for engines of the fuel in-` jection type in which provision is made for automatically rendering the engine inoperative if the pressure of the lubricating oil falls below a predetermined minimum; also one in which provision is made for lubricating all parts of the fuel feed mechanism including the pumps and the metering valves; also one in which provision is made for efficiently lubricating the mechanism for operating an annular series of fuel pumps.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination of an enclosing casing umps in said casing, metering devices in said casing, mechanism for operating said vdevices in said casing, means for delivering lubricant under pressure to said casing to lubricate the parts therein, and means for rendering the pumps ineffective to deliver fuel when the ressure of the lubricant in the casing falls elow a predetermined degree.

2. The combination of an enclosing casing adapted to contain lubricant, fuel pumps in said casing, mechanism for operating the pumps in said casing, metering devices iii said casing, mechanism for operating said devices in said casing, means for delivering lubricant under pressure to said casing to lubicate the parts therein, and means for ren dering the pumps ineffective to deliver fuel when the pressure ofthe lubricant in the casing falls below a predetermined degree.'

3. The combination of an enclosing casing adapted to contain lubricant, fuel pumps in said casing, mechanism for operating the pumps in said casing, metering devices in said casing, means for delivering lubricant to said casing to lubricate the parts therein, and mechanism for operating said devices controlled by the pressure of the lubricant in the casing.

4'. The combination with an engine of the fuel injection type, of a casing adapted to contain lubricant, mechanism in said casing for delivering fuel under pressure tothe engine, comprising a pump, mechanismfor supplying lubricant to said casing to lubricate the pump, and means to render the pump ineffective when the pressure of the lubricant falls below a predetermined degree.

5. The combination with an engine of the fuel injection type, of a casing adapted to contain lubricant, mechanism for delivering fuel under pressure to the engine comprising a pump and a metering device to render the pum effective to deliver fuel, mechanism for supp ying lubricant to said casing, and means to keep thedevice open to render the pump vineffective when the pressure of the lubricant falls below a predetermined degree.

6. In mechanism for feeding fuel to a multi-cylinder engine, ,the combinationof an enclosing and supporting casing adapted to contain lubricant, a drive-shaft longitudinally disposed therein, a series' of fuel pumps annularly arranged around the axis of the shaft, mechanism for operating said fuel pumps, metering devices in the casing, mechanism driven by said shaft for operating the metering devices, means for delivering lubricant into the casing to lubricate the parts therein, and means operated by the lubricant orlrendering the pumps ineffective to deliver 7. In mechanism for feeding fuel to a multi-cylinder engine, the combination of lan enclosing and supporting casing `adapted to contain lubricant, a drive shaft longitudinally disposed therein, fuel umps annularly arranged around the axis o the shaft, mechanism for o rating said fuel pumps, metering devices in the casing, mechanism driven by sai-d shaft for operating the metering de vices, means for delivering lubricant into the casing to lubricate the parts therein. and means operated by the pressure of the lubi'icant in the casing to automatically open the metering devices to prevent deliveiy of fuel.

8. In mechanism for feeding fuelto a multi-cylinder engine, the combination of an enclosing and supporting casing adapted to contain lubricant, a drive shaft longitudinally disposed therein, a series of fuel pumps annularly arranged around the axis of the shaft, mechanism for operating said fuel pumps, timing mechanism through which said shaft is driven mounted in the casing, metering Adevices in the casing, mechanism driven by said shaft for operating the metering devices, means for delivering lubricant into the casing to lubricate the parts therein, and means operated by 'the lubricant for rendering the pumps ineffective to deliver fuel.

9. In mechanism for feeding fuel to a mulA ti-cylinder engine, the combination of an enclosing and supporting casing adapted to contain lubricant, a drive shaft longitudinally disposed therein, a series of fuel pumps annularly arranged around the axis of the shaft, mechanism for operating said fuel pumps, timing mechanism throughwhiclh said shaft is driven mounted in the casing, metering devices in the casing, mechanism driven by said shaft for operating the metering devices, means for delivering lubricant int-o the casing to lubricate the parts therein, and means operated by the lubricant for controlling t-he metering devices to render the pumps ineffective to deliver fuel.-

10. In mechanism for feeding fuel to a multi-cylinder engine, the combination of an enclosing and supporting casing adapted to contain lubricant, a drive shaftlongitudinally disposed therein, a series of fuel pumps annularly arranged around the axis of the shaft, mechanism in the casing and drivenby the shaft for operating said fuel pumps, timing mechanism through which said shaft is drlven mounted in the casing, metering devices in the casing, mechanism driven by said shaft for operating the metering devices, means for delivering lubricant into the casing to lubricate the parts therein, and means operated by the lubricant controlling the metering devices.

11. The'combination of a casing adapted to contain lubricant, a pump for delivering fuel under pressure to the engine, a metering device for controlling the delivery of fuel to the engine, mechanism for controlling the metering device to vary the charges of fuel, means for supplying lubricant under pressure to the casing to lubricate the mechanisms therein, and means operable by the lubricant whereby the controlling mechanism Will be rendered inoperative.

12.V The combination of a casing adapted to y contain lubricant, a pump for delivering fuel under pressure to the engine, a metering device for controllingthe delivery of fuel to the engine, manually shiftable mechanism for controllin the metering device to vary the charges o fuel, means for supplying lubricant under pressure to the casing to lubricate the mechanisms therein` and means operable by the lubricant to render the control mechanism inoperative.

13. The combination of a casing adapted to contain lubricant, a pump for delivering fuel under pressure to the engine, a metering device for controlling the delivery-of fuel to the engine, mechanism for controlling the metering device to vary the charges of fuel comprising a. clutch, means for supplying lubricantunder pressure to the casing to lubricatc the mechanisms therein, and means operable by the lubricant for uncoupling the clutch.

1li. The combination of a casing adapted to contain lubricant, a pump for delivering fuel under pressure to the engine, a metering device for controlling the delivery of fuel to the en 'ne, mechanism comprising a cam for contro ling the metering devices to vary the charges-of fuel, means for supplying lubricant under pressure to the casing to lubricate the mechanism therein, and means operable by the lubricant for controlling the operation of the cam.

15. In mechanism for feeding fuel to a multi-cylinder engine of the injection type, the combination of a supporting casing adapted to contain lubricant, a drive shaft longitudinally disposed therein, a series of reciprocating pumps annularly arranged in the casing, mechanism enclosed in the casing for operating the pumps, metering devices in the casing, means driven by the shaft comprising a member coaxial therewith for operating the metering devices,- a lubricant chamber 1n the casing, means for delivering lubricant under pressure to said chamber, means for delivering fuel from .the chamber to the pumps, means for delivering lubricant from said chamber to the mechanism for operating the metering devices and to the mechanism for operating the pumps.

16. In mechanism for feeding fuel to a multi-cylinder engine of the injection type, the combination of a supporting casing adapted to contain lubricant, a drive shaft longitudinally disposed therein, a series of reciprocating pumps annularly arranged in the casing, mechanism enclosed in the 'casing for operating the pumps, metering devices in the casing, means driven by the shaft com prisino a member coaxial therewith for operating the metering devices, a lubricant chamber in the casing, means for delivering lubricant under pressure to said chamber, means for delivering fuel from the chamber to the pumps, means for delivering lubricant from said chamber to the metering devices and the mechanism for operating them.

17. The combination of an enclosing lcasing adapted to contain lubricant,fpumps in the casing for delivering fuel under pressure to the engine, mechanism in the casing for operating the pumps, metering devices in `the casing, mechanism in the casing for operating the metering devices, means for manually controlling the operation of the metering devices by' their operating mechanism. means for delivering lubricant under pressure to the casing, and means to render the means for delivering lubricant under pressure to the casing, and means to render the cam inoperative when the pressure of the lubricant falls below a predetermined point.

19. In mechanism for feeding fuel to engines, the combination of a casing adapted vto contain lubricant, a reciprocating pump comprising a piston and cylinder, a lubricant chamber in said casing, the piston having a longitudinally extending port therein, a lubri cant duct between said chamber and the port in said piston, and mechanism for operating the pump comprising apitman connected to. the piston, the longitudinal port being connected to deliver lubricant `to thebearing between the pitman and the piston,

20. In mechanism for feeding fuel to engines, the combination of an enclosing and supporting casing adapted to contain lubricant, a drive shaftlongitudinally `disposed therein, a. series of reciprocating pumps, each comprising a piston and cylinder, a lubricant chamber in said casing, each piston having a longitudinally extending port therein, lubricant ports between said chamber and the port in said pistons, and mechanism for operating the pumps comprising pitmen connected to the pistons, the longitudinal `ports being connected to deliver lubricant to the bearings between the pitmen and the pistons respectively.

2l. In mechanism `for feeding fuel to engines, the combination of an enclosing and supporting casing adapted to contain lubricant, a reciprocating pump comprising a piston and cylinder, a lubricant chamber in said casing, the piston having a longitudinally extending port therein, a lubricant port between said. chamber and said piston to deliver lubricant to the outside of the piston, a port in the piston to deliver lubricant into the longitudinal port, and mechanism for operating the pump comprising a pitman connected to the piston, the longitudinal port be' ing connected to deliver lubricant to the bearing between the pitman and the piston.

22. In mechanism for feeding fuel to engines, the combination of an enclosing casing provided with a. chamber adapted to contain lubricant, a reciprocating fuel pump comprising a piston and a cylinder, an oil port extending longitudinally of the piston, means to deliver oil from said chamber to said port, a pitman for operating the piston having a'bearing therein to which Said port leads, and an o erating element connected to the other end o the pitman, the latter having a longitudinal port for delivering lubricant tothe bearing-between the operating element and the pitman.

23. In mechanism for feedino fuel to en-. gines, the combination of an encIosing casing provided with a chamber adapted to contain lubricant, a reciprocating fuel pump comprising a piston and a 'cylinden'an oil port eX- tending longitudinally of the piston, means to deliver oilv from said chamber to said port, a pitman for operating the piston having a ball-bearing between one end of the pitman and the piston to which said port leads, an operating stud' and a` ball-bearing-between the stud and the other end of the pitman, the latter having a port between the bearings to deliver lubricant to the bearing between' the stud and the pitman.

24.-. In mechanism for feedin fuel to en`- gines, the combination of an enc osing casing provided with a chamber adapted to contain lubricant, an annular series of fuel pumps each comprising a piston'and a cylinder, each piston havino longitudinal oil ports, means to deliver oil rom said chamber to said ports, pitmen for operating the pistons each having a bearing therein to which one of the ports leads, operating studs connected to the other end of the pitmen respectively, and means for conducting oil from said ports to the bearings between the pistons and the pitmen and the bearings between the studs and the pitmen.

25. In mechanism for feeding fuel to engines, the combination of a casing provided with a chamber to contain lubricant, a reciprocating pump for delivering fuel to an engine comprising a piston and a cylinder, packing rings around the piston, a. springpressed sleeve around the piston and for compressing the packing rings. and means for delivering oil from the chamber through the sleeve to the packing rings.

26. In mechanism for feeding fuel to engines, the combination of a casing provided with a chamber to contain lubricant, a reciprocating pump for delivering fuel to an engine comprising a piston and a cylinder, packing rings around the.4 piston, a springpressed sleeve around the piston and for compressing the packing rings, means for delivering oil from the chamber through the sleeve to the packing rings and to the piston, a pitman for operating the piston, and means to conduct oil through the piston to the connection between the pitman and the piston.

27. The combination with anengine of the fuel injection type, of a casing, mechanism for delivering fuel under pressure to the en` gine comprising a pump and a metering device associated with the pump and operable to control the delivery of the fuel pumped thereby, mechanism for supplyin lubricant under pressure to said casing, an means for stopping the operation of the metering device when the pressure of the lubricant falls below a predetermined degree.

28. The combination with an engine of the fuel injection type, of a casing, mechanism for delivering fuel under pressure to the engine comprising a ump and ametering device associated Wit the pump, mechanism for operating said device to control the delivery of fuel pumped, mechanism for supplying lubricant under pressure to said casvfuel injection vice associated erewit and operable to control the delivery of the fuel ump thereby, mechanism for supplying lu ricant under pressure to said casing, and means for stopping the operation of the meterin device when the pressure of the lubricant alls below a predetermined de ree comprising a bellows operated by the lu ricant.

30. The combination with an engine of the fuel injection type, of a casing, mechanism for dellverin fuel undex` pressure to the en# gine mounte in the casin and comprisin a pump and a meterin dev1ce associated wlth the pump and oper-ab e to control'the delivery of fuel pum d thereby, mechanism for sup-` plying lubricant under pressure to said casing to lubricate thefuel delivering mechanism, and means for stopping the operation of the metering device when the pressure of the lubricant falls below a predetermined degrec.

Si ed at Chicago, lllinois, this 24th day of vli arch, 1925. f

` AAGE E. WINCKLER. 

